Single molecule realization of the switch and doide combination
Inactive Publication Date: 2003-10-02
VALTRUS INNOVATIONS LTD +1
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- Description
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Benefits of technology
[0011] The teachings herein provide a set of principles to combine diodes and switches within one molecular species. Further, with the present teachings, only a single molecular species is needed for the fabrication of viable moletronic devices such as crossbar memory arrays. Consequently, device fabrication is easier and cheaper, and the device itself less faulty and more reliable.
Problems solved by technology
At nanoscale dimensions, electronic circuit elements cannot be fabricated by conventional photolithographic methods, as is well-known.
Moreover, the conventional principles of transporting, amplifying, and switching currents do not work anymore.
However, this would make the device fabrication more difficult.
More importantly, in such a design, one molecular layer is likely to interfere with another, which may spoil useful electronic properties of both layers.
The device becomes more faulty, less reliable, and more expensive to build.
Method used
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Embodiment Construction
[0017] There are several design principles that are employed in the teachings herein. The switching mechanism is adopted from a previous invention entitled "Bistable Molecular Mechanical Device with an Appended Rotor Activated by an Electric Field for Electronic Switching, Gating and Memory Applications", filed in the names of Alexandre M. Bratkovski et al, Ser. No. 09 / 759,438, filed Jan. 12, 2001, and assigned to the same assignee as the present application, the contents of which are incorporated herein by reference. In that patent application, nanometer-scale reversible electronic switches are provided that can be assembled to make crossbar circuits that provide memory, logic, and communications functions. The electronic switches, or crossed-wire devices, comprise a pair of crossed wires that form a junction where one wire crosses another at an angle other than zero degrees and at least one connector species connecting the pair of crossed wires in the junction. The junction has a ...
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Diodes and switches are combined in a single molecular species. Thus, the single molecular species is capable of performing more than one function. A single molecular species having both diode and switch functionalities is provided. The molecular species is represented by the formula: where A and B are non-identical conducting moieties, I is an insulating bridge between A and B, CL and CR are connectors to left and right electrodes, respectively, and "+" and "-" represent a rotatable dipolar moiety. Further, a diode-switch combination is provided, comprising the single molecular species. The teachings herein provide a set of principles to combine diodes and switches within one molecular species. Further, with the present teachings, only a single molecular species is needed for the fabrication of viable moletronic devices such as crossbar memory arrays. Consequently, device fabrication is easier and cheaper, and the device itself less faulty and more reliable.
Description
[0001] The present invention relates generally to nanoscale devices, and, more particularly to nanoscale devices utilizing switching molecules.[0002] The emerging field of molecular electronics holds the promise for ultimate miniaturization of computer memory and logic circuits down to nanometer size. At nanoscale dimensions, electronic circuit elements cannot be fabricated by conventional photolithographic methods, as is well-known. Moreover, the conventional principles of transporting, amplifying, and switching currents do not work anymore. Molecular electronics (moletronics) has to provide molecular-size replacements for various elements of semiconductor electronics.[0003] Traditionally, moletronic solutions have been focused on finding single-molecule wires, diodes, switches, transistors, and so on, that are on elements that could perform single electronic functions. However, most of memory and logic designs require combinations of two or more functions being performed simultane...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G11C13/02H01B1/00H01L27/00H01L31/0328H01L51/00H01L51/30
CPCB82Y10/00H01L51/0595H01L51/05H01L51/0051H10K85/611H10K10/00H10K10/701
InventorKORNILOVICH, PAVEL
OwnerVALTRUS INNOVATIONS LTD